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An X-ray tomography approach to calculate air volume present in an insulation system sewn with lockstitch and spacer stitch
International Journal of Clothing Science and Technology ( IF 1.2 ) Pub Date : 2020-04-16 , DOI: 10.1108/ijcst-02-2019-0018 Hassan Saeed , Sybille Krzywinski
International Journal of Clothing Science and Technology ( IF 1.2 ) Pub Date : 2020-04-16 , DOI: 10.1108/ijcst-02-2019-0018 Hassan Saeed , Sybille Krzywinski
Sewing is the most widely used and preferred method for manufacturing clothing products for extreme weather conditions and other industrial insulation systems. Multiple layers of functional fabrics in combination with insulation materials are used to thermally insulate precious body heat from its surrounding cold environment. The sewing process fixes the insulation material between the fabric layers. During conventional sewing, the insulation material is compressed along the stitch line. With the compression of the insulation material, entrapped air is forced to leave the insulation material internal structure, and heat loss occurs along the entire length of the stitch line. It results in the deterioration of thermal properties of the end product along the stitch line.,The amount of air, which is a decisive factor for thermal properties of any insulation system, was investigated at the level of a unit stitch length of a lockstitch. Conventional microscopy methods are not suitable to study the compression along the stitch line. With the help of X-ray tomography, the three-dimensional data of a stitch was taken and studied to measure the volume of air. The samples were prepared with conventional lockstitch sewing and a newly developed innovative sewing method “Spacer Stitching.” The results are compared with each other in terms of the amount of air present in a unit stitch length.,Calculations based on X-ray tomography images of lockstitch and spacer stitch revealed that, in the case of lockstitch, a unit stitch has a 15% of its volume made up of material and 85% of its volume by air. In comparison, the spacer stitch with the same sewing and fabric parameters has a material volume of 4.6 % and an air volume of 95.4% in a single stitch.,The research can positively improve the thermal properties of sewn material made for insulating purposes of conventional clothing as well as of industrial insulations.,There is no literature available which investigates and calculates the amount of air and material present along with a stitch line.
中文翻译:
一种 X 射线断层扫描方法,用于计算用平针和间隔针缝制的绝缘系统中存在的空气量
缝纫是制造用于极端天气条件和其他工业绝缘系统的服装产品的最广泛使用和首选的方法。多层功能性织物结合隔热材料用于将宝贵的身体热量与周围寒冷环境隔热。缝纫过程将绝缘材料固定在织物层之间。在传统缝纫过程中,绝缘材料沿缝合线被压缩。随着绝缘材料的压缩,夹带的空气被迫离开绝缘材料的内部结构,并且沿着缝合线的整个长度发生热损失。它会导致最终产品沿针迹线的热性能变差。空气量,这是任何绝缘系统热性能的决定性因素,在平缝的单位针迹长度水平上进行了研究。传统的显微镜方法不适合研究沿缝合线的压缩。在 X 射线断层扫描的帮助下,对针迹的三维数据进行了研究,以测量空气的体积。样品是用传统的平缝缝纫和新开发的创新缝纫方法“间隔缝纫”准备的。根据单位针迹长度中存在的空气量将结果相互比较。,基于平针和间隔针的 X 射线断层扫描图像的计算表明,在平针的情况下,单位针有 15其体积的 % 由材料构成,其体积的 85% 由空气构成。相比下,
更新日期:2020-04-16
中文翻译:
一种 X 射线断层扫描方法,用于计算用平针和间隔针缝制的绝缘系统中存在的空气量
缝纫是制造用于极端天气条件和其他工业绝缘系统的服装产品的最广泛使用和首选的方法。多层功能性织物结合隔热材料用于将宝贵的身体热量与周围寒冷环境隔热。缝纫过程将绝缘材料固定在织物层之间。在传统缝纫过程中,绝缘材料沿缝合线被压缩。随着绝缘材料的压缩,夹带的空气被迫离开绝缘材料的内部结构,并且沿着缝合线的整个长度发生热损失。它会导致最终产品沿针迹线的热性能变差。空气量,这是任何绝缘系统热性能的决定性因素,在平缝的单位针迹长度水平上进行了研究。传统的显微镜方法不适合研究沿缝合线的压缩。在 X 射线断层扫描的帮助下,对针迹的三维数据进行了研究,以测量空气的体积。样品是用传统的平缝缝纫和新开发的创新缝纫方法“间隔缝纫”准备的。根据单位针迹长度中存在的空气量将结果相互比较。,基于平针和间隔针的 X 射线断层扫描图像的计算表明,在平针的情况下,单位针有 15其体积的 % 由材料构成,其体积的 85% 由空气构成。相比下,